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When Ldaxr Doesn't Work: Exclusive Accesses and Cacheability on AArch64
Original: When Ldaxr Doesn't Work: Exclusive Accesses and Cacheability on AArch64 https://joelsiks.com/posts/aarch64-exclusive-acc
A new technical blog post by Joel Siks examines why the AArch64 ldaxr instruction can fail when memory is not marked cacheable, explaining how exclusive accesses behave in ARM's architecture. The post walks through the low-level details of load-exclusive/store-exclusive operations and cacheability requirements, and is being shared among developers discussing ARM systems programming and concurrency primitives.
Why now: Technical deep dives on ARM64 memory ordering and exclusive access pitfalls draw attention from systems programmers
Evidence
- When Ldaxr Doesn't Work: Exclusive Accesses and Cacheability on AArch64 https://joelsiks.com/posts/aarch64-exclusive-access-cacheability/ # HackerNews # Tech # AArch64 · hackernews@robot.villas · 1
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